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Identification of Hammerstein-Wiener model with discontinuous input nonlinearity

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Abstract

This paper deals with the identification of Hammerstein-Wiener models with an irregular function in the input block. These models comprise a set of linear segments. The linear time invariant (LTI) block may be parametric or nonparametric. The nonlinearity of the output can be any continuous function of arbitrary shape; it is not necessarily assumed to be invertible. Subsequently, sine inputs will be used to identify the system parameters. First, the output nonlinearity is determined by filtering the system output and varying the phase of a given reference sine signal; second, the parameters of the linear block can be determined for any frequency; and finally, the input nonlinearity can be obtained by changing the offset and amplitude of the input sine signal.

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Authors and Affiliations

  1. ENSAM, Moulay Ismail University, Meknes, 50000, Morocco

    A. Brouri, F. Z. El Mansouri & C. Abdelaali

  2. ENSAM, University Mohammed V, Rabat, 10000, Morocco

    F. Z. Chaoui

  3. Normandie Universite, Caen, 14118, France

    F. Giri

Authors
  1. A. Brouri
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  2. F. Z. El Mansouri
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  3. F. Z. Chaoui
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  4. C. Abdelaali
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  5. F. Giri
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Corresponding author

Correspondence to F. Z. El Mansouri.

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Brouri, A., El Mansouri, F.Z., Chaoui, F.Z. et al. Identification of Hammerstein-Wiener model with discontinuous input nonlinearity. Sci. China Inf. Sci. 66, 222201 (2023). https://doi.org/10.1007/s11432-022-3767-2

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  • DOI: https://doi.org/10.1007/s11432-022-3767-2

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